1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
oee [108]
3 years ago
13

Which unit of speed will you use to express the speed of the following. 1. Aeroplane. 2.tortoise. 3.ant 4.horse​

Physics
1 answer:
Naya [18.7K]3 years ago
8 0

Aeroplane- m/s

Horse-km/h

Ant=m/h

Tortoise=m/h

Hope this helps!

You might be interested in
Hi to answer this question you need to be in 5th grade or older
777dan777 [17]

The answer is A.They push one another apart

5 0
3 years ago
What is the force between two proton’s that are 0.005m apart?
Jet001 [13]

Answer:

Force, F=9.21\times 10^{-24}\ N

Explanation:

Distance between proton is 0.005 m

It is required to find the force between two protons. Protons have of positive charge of 1.6\times 10^{-19}\ C. Two protons will have a force of repulsion between them. The force is given by :

F=\dfrac{kq^2}{r^2}\\\\F=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{(0.005)^2}\\\\F=9.21\times 10^{-24}\ N

So, the force between two protons is 9.21\times 10^{-24}\ N.

7 0
3 years ago
How do the individual forces compare when the rider experiences a sensation being lighter than his normal weight ? What is the a
shusha [124]

Answer:

When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.

Explanation:

A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.

Two forces are acting on the person; the force of gravity and the upward normal force from the elevator.

When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight. N = mg + ma

When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight. N = mg - ma

However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight. N = mg

When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness. N = (mg - mg) = 0

6 0
2 years ago
A car from rest moves a distance s(m) in t second, where s=3t³+t²/4 determine(i)the initial acceleration of the car (ii)the acce
Sunny_sXe [5.5K]

Answer:

0.5 , 54.5

Explanation:

for acceleration we should derivate the equation 2 times

x=3t³+t²/4

v=9t²+t/2

a=18t+1/2

a(0)=0.5

a(3)=54.5

8 0
3 years ago
What type of energy does a stove use to convert into heat
sasho [114]
This Is What I Found<span>(Non-electric stoves and ovens use gas energy, a chemical energy. This is then transformed into heat.) What types of energy does a computer convert electricity into? (Light, sound, motion, and heat.)    I'm Not Taking Credit For It, Because I Didn't Come Up With That Answer.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Discharge is not possible at ntp why​
    7·1 answer
  • A woman floats in a region of the Great Salt Lake where the water is about four times saltier than the ocean and has a density o
    8·1 answer
  • Design at least two independent experiments to determine the wavelength of a microwave source. You have a microwave source, micr
    14·1 answer
  • If a converging lens forms a real, inverted image 24.0 cm to the right of the lens when the object is placed 48.0 cm to the left
    6·2 answers
  • Consider an electron and a proton that are initially at rest and are separated by 2.00 nm. Neglecting any motion of the much mor
    10·1 answer
  • Help me plzzzzzz! Can someone help me with number 4 Idon’t get it
    7·2 answers
  • A toy car that 0.12 m long is used to model the actions of an actual car that is 6m long. Which ratio shows the relationship bet
    12·1 answer
  • A Young's double-slit experiment is performed using light that has a wavelength of 631 nm. The separation between the slits is 5
    7·1 answer
  • What is the acceleration a of the refrigerator 4 s after the person begins pushing on it with a force of 400 N?
    5·2 answers
  • Blonde hair is produced by inheriting double recessive alleles (bb) from one’s parents. What is the probability of their offspri
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!